help pls I just need the number not the whole thing I'll give mark the u the brainliest giving 50 points tyyy <3

Step-by-step explanation:

Solving the brackets.

Dividing and simplifying.

15

Step-by-step explanation:

   (2 + 3) * 3

= x (2 + 3)

       5

   5 * 3

= x  5

       5

= 15

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step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4